In the Java UI, when you Deactivate/Cancel a single object, a checkback asking if you'd really like to perform this action is observed.
In the AWI, this checkback is not present unless you select two or more objects for deactivation.
This is a feature gap, and has been identified for a future fix/release.
This issue has been found and will be fixed in the following components/versions:
Automic Web Interface, 12.3.0, currently planned for release February 28th, 2019.